“He knows he handled it badly at first, that he should have been a little more cooperative,” said Pope, who lives in Hurst, a town located between Dallas and Ft. Worth. "[The officer] comes up at a jolting sprint, kneed him right in the back of the head and as you can see on the video and says, 'If you move I’m gonna bleep bleep kill you,” Pope said, describing the video.

The officer, who identified himself on the video as "Arnold 654," also used a gay slur after the teen used it.

Pope plans to go to the Hurst Police Department on Monday to speak directly with the police chief about the incident.

"This is not behavior that the city of Hurst promotes or condones in any way,” said the Hurst Police in a statement to NBCDFW. “We strive to build a stronger, safer community through our work around the city and will continue to do so through appropriate action. The incident will be investigated internally."